1 /*
2 * FTGL - OpenGL font library
3 *
4 * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
5 * Copyright (c) 2008 Sam Hocevar <sam@zoy.org>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be
16 * included in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
22 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27 #include "../config.h"
28
29 #include "FTGL/ftgl.h"
30
31 #include "../FTInternals.h"
32 #include "FTPixmapFontImpl.h"
33
34
35 //
36 // FTPixmapFont
37 //
38
39
FTPixmapFont(char const * fontFilePath)40 FTPixmapFont::FTPixmapFont(char const *fontFilePath) :
41 FTFont(new FTPixmapFontImpl(this, fontFilePath))
42 {}
43
44
FTPixmapFont(const unsigned char * pBufferBytes,size_t bufferSizeInBytes)45 FTPixmapFont::FTPixmapFont(const unsigned char *pBufferBytes,
46 size_t bufferSizeInBytes) :
47 FTFont(new FTPixmapFontImpl(this, pBufferBytes, bufferSizeInBytes))
48 {}
49
50
~FTPixmapFont()51 FTPixmapFont::~FTPixmapFont()
52 {}
53
54
MakeGlyph(FT_GlyphSlot ftGlyph)55 FTGlyph* FTPixmapFont::MakeGlyph(FT_GlyphSlot ftGlyph)
56 {
57 return new FTPixmapGlyph(ftGlyph);
58 }
59
60
61 //
62 // FTPixmapFontImpl
63 //
64
65
FTPixmapFontImpl(FTFont * ftFont,const char * fontFilePath)66 FTPixmapFontImpl::FTPixmapFontImpl(FTFont *ftFont, const char* fontFilePath)
67 : FTFontImpl(ftFont, fontFilePath)
68 {
69 load_flags = FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP;
70 }
71
72
FTPixmapFontImpl(FTFont * ftFont,const unsigned char * pBufferBytes,size_t bufferSizeInBytes)73 FTPixmapFontImpl::FTPixmapFontImpl(FTFont *ftFont,
74 const unsigned char *pBufferBytes,
75 size_t bufferSizeInBytes)
76 : FTFontImpl(ftFont, pBufferBytes, bufferSizeInBytes)
77 {
78 load_flags = FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP;
79 }
80
81
82 template <typename T>
RenderI(const T * string,const int len,FTPoint position,FTPoint spacing,int renderMode)83 inline FTPoint FTPixmapFontImpl::RenderI(const T* string, const int len,
84 FTPoint position, FTPoint spacing,
85 int renderMode)
86 {
87 // Protect GL_TEXTURE_2D and GL_BLEND, glPixelTransferf(), and blending
88 // functions.
89 glPushAttrib(GL_ENABLE_BIT | GL_PIXEL_MODE_BIT | GL_COLOR_BUFFER_BIT);
90
91 // Protect glPixelStorei() calls (made by FTPixmapGlyphImpl::RenderImpl).
92 glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
93
94 glEnable(GL_BLEND);
95 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
96
97 glDisable(GL_TEXTURE_2D);
98
99 GLfloat ftglColour[4];
100 glGetFloatv(GL_CURRENT_RASTER_COLOR, ftglColour);
101
102 glPixelTransferf(GL_RED_SCALE, ftglColour[0]);
103 glPixelTransferf(GL_GREEN_SCALE, ftglColour[1]);
104 glPixelTransferf(GL_BLUE_SCALE, ftglColour[2]);
105 glPixelTransferf(GL_ALPHA_SCALE, ftglColour[3]);
106
107 FTPoint tmp = FTFontImpl::Render(string, len,
108 position, spacing, renderMode);
109
110 glPopClientAttrib();
111 glPopAttrib();
112
113 return tmp;
114 }
115
116
Render(const char * string,const int len,FTPoint position,FTPoint spacing,int renderMode)117 FTPoint FTPixmapFontImpl::Render(const char * string, const int len,
118 FTPoint position, FTPoint spacing,
119 int renderMode)
120 {
121 return RenderI(string, len, position, spacing, renderMode);
122 }
123
124
Render(const wchar_t * string,const int len,FTPoint position,FTPoint spacing,int renderMode)125 FTPoint FTPixmapFontImpl::Render(const wchar_t * string, const int len,
126 FTPoint position, FTPoint spacing,
127 int renderMode)
128 {
129 return RenderI(string, len, position, spacing, renderMode);
130 }
131
132